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travandClaude Opus 5 9483d8951b v0.19.0: andTunes plays music on the Rabbit 
The Android half of andTunes had been paused on a 1 GB toolchain download
(Gradle wrapper, Android Gradle Plugin, Kotlin). None of that was needed:
platform 33 and build-tools 34 were already in ~/Android/Sdk, and an app that
links no libraries needs five SDK steps, not a build system. andtunes/build.py
runs aapt2 -> javac -> R8 -> zipalign -> apksigner and produces a 61 KiB APK.

andTunes 0.1.0 is framework-only Java: a six-tile menu that loads nothing, a
streaming library.json parse grouped into artists and albums in one pass, one
ListActivity for every list (songs and artist songs open with Shuffle all,
albums carry art thumbs, search as you type), a Now playing bar under every
list, and a white Now Playing screen with square art, a slim scrubber,
prev/play/next, shuffle and repeat, and no back button. A foreground
PlaybackService owns the queue: audio focus, becoming-noisy, MediaSession and
a MediaStyle notification, end of queue pauses, missing files skip, and the
last queue and position come back on launch. Black on white, and every size
doubled for the R1's override density. Cold start to the menu: 313-338 ms.

The scroll wheel turned out to be DPAD_UP/DOWN (stock Generic.kl), not
volume. The app takes both in dispatchKeyEvent: lists scroll a row per
detent, and the menu and Now Playing get volume.

LinTunes side: Connections > Install andTunes on Rabbit... installs the
committed APK over adb and grants all-files access, or copies it to Download/
over MTP when there's no adb. Sync fills Buttons/ with default artwork only
where a file is missing, so trav's own art is never overwritten.

Verified against the dev library only, synced to the R1 and driven with
adb input + screencap.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01KSsYtRn4WZx6xj4GEdVPt9
2026-09-11 14:25:55 -05:00

5.6 KiB
Raw Blame History

andTunes — task board

A music player for the Rabbit R1 that never scans anything: LinTunes writes Music/andTunes/library.json during sync and the app just reads it. See ../andTunes spec.txt for the original brief.

Legend: [ ] todo · [~] in progress · [x] done.

Status: 0.1.0 plays music (2026-09-11, LinTunes round 50). Built with python3 andtunes/build.py — plain Java, no Gradle, nothing downloaded (see README.md, Toolchain). Phases are andTunes' own; which LinTunes round each lands in is decided when it starts.

Device facts (measured 2026-09-06, adb shell wm size etc.)

  • Panel 480 × 640 px, physical density 320, override density 160 — so the app sees a 480 × 640 dp canvas on a 2.88" screen (~278 real ppi).
  • One dp is about half its usual physical size here. Double every stock value: body text 28–32 sp, list rows ≥ 88 dp, menu tiles ~213 dp. A 48 dp row would be 4.4 mm tall. Do not "fix" this by changing the device density — trav likes it where it is.
  • Android 13 / API 33, gsi_r1-userdebug, arm64-v8a, 65 GB free.
  • Scroll wheel = input device och1970_holl_key → KEY_UP / KEY_DOWN, mapped by the stock Generic.kl (checked 2026-09-11 via dumpsys input) to KEYCODE_DPAD_UP / DPAD_DOWN — not volume. Side/PTT button sits on mtk-kpd with KEY_VOLUMEDOWN + KEY_POWER. Headset exposes KEY_PLAYPAUSE, so a MediaSession gets media keys for free.
  • USB: set to come up as mtp,adb whenever the screen is unlocked (adb shell svc usb setScreenUnlockedFunctions mtp, 2026-09-11), so the gvfs mount sync uses and the adb install uses are both there at once.

Phase 1 — plays a song (v0.1.0) ✔

  • java-21-openjdk-devel — installed, javac on PATH. (Java 25 is also present; build.py points at 21.)
  • Android SDK: platform 33 + build-tools 34.0.0 were already in ~/Android/Sdk. No Gradle, no Kotlin — build.py runs aapt2 → javac → R8 → zipalign → apksigner directly (trav, 2026-09-11: don't pull a GB over cell if it isn't needed; it isn't).
  • Project, package me.teafry.andtunes, minSdk 26 / targetSdk 33, framework only: Activity, ListView, MediaPlayer, MediaSession, Notification.MediaStyle, R8. The APK is 61 KiB.
  • MANAGE_EXTERNAL_STORAGE + a first-run screen that sends the user to the toggle (LinTunes' installer grants it over adb, so it rarely shows).
  • Library loader: android.util.JsonReader streaming parse off the main thread into a process singleton; artists/albums grouped in one pass; an unknown format gets a readable message; reloads when library.json changes (a re-sync) the next time the menu resumes.
  • MenuActivity: six tiles, 2 × 3, loads nothing. The sixth reads "Now Playing" or "Shuffle All" depending on the service.
  • ListActivity in songs mode + "Shuffle all" header row.
  • PlaybackService (foreground) + NowPlayingActivity: white background, square art, slim scrubber, ◀ ⏯ ▶, shuffle, repeat. No back button.
  • Audio focus, ACTION_AUDIO_BECOMING_NOISY, MediaSession + notification.
  • End of queue pauses unless repeat is on. Repeat: off / all / one.
  • adb shell am start -W: 313–338 ms cold to the menu (551 ms on the very first launch after install, which includes dex verification).

Phase 2 — the rest of the screens ✔

  • Playlists, artists (→ "All songs" + albums; all songs has its own shuffle), albums, search (artists, albums and songs as you type).
  • Album art thumbs in album rows, full art on now playing.
  • The "Now playing" bar at the bottom of every list screen; the playing song is drawn inverted in any list it appears in.
  • Scroll wheel → list scrolling (one row per detent), volume on the menu and now-playing screens. Taken in dispatchKeyEvent, DPAD and VOLUME codes, down and up, so the search box can't swallow it.
  • Replaceable button images: Buttons/<name>.png beats the bundled drawable, for the six menu tiles plus ◀ ▶ ⏯. LinTunes ships the defaults into Buttons/ only where the file is missing.
  • Missing file (synced then deleted) skips with a toast, doesn't stop the queue.
  • Resume last queue + track + position on launch (paused).

Phase 3 — install from LinTunes, counts coming back

  • Connections → Install andTunes on Rabbit… (LinTunes 0.19.0): adb install -r + the two permission grants; says Install / Update / Reinstall from the version on the device; with no adb, copies the APK to Download/ over MTP for a manual tap. APK committed at lintunes/android/andTunes.apk (+ andTunes.json, its version).
  • Format gate shaped like export/web_support.py: deny-by-default on suffix, protected AAC refused, anything else unplayable converted to FLAC (never a lossy re-encode).
  • Play counts back: the app writes plays/andtunes-<installid>.json in the per-machine-totals shape of storage/play_journal.py; sync copies it back and folds it in. The R1 becomes one more machine in the Round 38 model — no new merge rules.
  • Retire Sync Playlist to Rabbit (Auxio) now that andTunes covers it. (trav's R1 has no old Music/<Playlist>/ folders, so no cleanup.)

Parked

  • Gapless, crossfade, EQ, ratings, folder browsing, sleep timer, Android Auto.
  • Deleting the old per-playlist folders automatically. They're outside the andTunes root and the containment guard makes them unreachable on purpose; removing them should be an explicit, separately-confirmed action.
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